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- Mahendra K. Verma, Pankaj Kumar Mishra, Ambrish Pandey, Supriyo Paul
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2012

Using direct numerical simulations of Rayleigh-BÃ©nard convection under free-slip boundary condition, we show that the normalized correlation function between the vertical velocity field and theâ€¦ (More)

- Ambrish Pandey, Mahendra K. Verma, Pankaj Kumar Mishra
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2014

Under the limit of infinite Prandtl number, we derive analytical expressions for the large-scale quantities, e.g., PÃ©clet number Pe, Nusselt number Nu, and rms value of the temperature fluctuationsâ€¦ (More)

- Ambrish Pandey, Abhishek Kumar, Anando G. Chatterjee, Mahendra K. Verma
- Physical review. E
- 2016

In this paper we estimate the relative strengths of various terms of the Rayleigh-BÃ©nard equations. Based on these estimates and scaling analysis, we derive a general formula for the large-scaleâ€¦ (More)

- Ambrish Pandey, Janet D Scheel, JÃ¶rg Schumacher
- Nature Communications
- 2018

Turbulent Rayleigh-BÃ©nard convection displays a large-scale order in the form of rolls and cells on lengths larger than the layer height once the fluctuations of temperature and velocity are removed.â€¦ (More)

Using direct numerical simulations of Rayleigh-BÃ©nard convection (RBC), we perform a comparative study of the spectra and fluxes of energy and entropy, and the scaling of large-scale quantities forâ€¦ (More)

Constructing simplermodels, either stochastic or deterministic, for exploring the phenomenon of flow reversals in fluid systems is in vogue across disciplines. Using direct numerical simulations andâ€¦ (More)

JÃ¶rg Schumacher, 2 Ambrish Pandey, Victor Yakhot, and Katepalli R. Sreenivasan 4 Tandon School of Engineering, New York University, New York, NY 11201, USA Institut fÃ¼r Thermound Fluiddynamik,â€¦ (More)

- Ambrish Pandey, Mahendra K. Verma, Mustansir Barma
- Physical review. E
- 2018

Using direct numerical simulations, we study the statistical properties of reversals in two-dimensional Rayleigh-BÃ©nard convection for infinite Prandtl number. We find that the large-scaleâ€¦ (More)

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